376 Broadhurst: Struthiopteris in North America 



position of the fallen ones marked by points as in 5. lineata; 

 lamina 22-71 cm. long, 12-35 cm. wide, broadly lanceolate to 

 broadly oblong (broadly ovate or elliptical in the smaller plants), 

 not at all or slightly reduced at the base (type A, without vestigial 

 pinnae), usually reduced gradually at the apex, not reduced in the 

 smaller forms; pinnae 7-20-jugate, lanceolate to lance-oblong, 

 straight or slightly curved in the outer half or near their apex 

 (falcate in some of the smaller fronds only), 8-20 cm. long, 1.8-3 

 cm. wide, tapering gradually, if slightly, to the abruptly acuminate, 

 serrate apex, the lower pinnae petioled, the base decidedly cordate; 

 margins revolute; leaf tissue rigid-herbaceous to coriaceous,* the 

 costae scaly, fibrillose, or naked, the under surface delicately 

 but often fully araneous on the raised veins; veins distinct, 

 definitely raised below, the vein spaces 12-16 to I cm. Sporophyls 

 40—175 cm. long; stipes 24-118 cm. long; lamina 48-64 cm. long 

 (16-23 in the smaller forms), reduced at the apex, but slightly 

 reduced at the base; pinnae 15-27-jugate (7-15 in the smaller 

 forms) with a sterile tip 5-10 mm. long which is often serrate, the 

 lower petioled and cordate at the base, 7-18 cm. long, 3-6 mm. 

 wide; often whitish-knobbed at the vein ends as in S. vivipara; 

 sporangia yellowish brown to dark brown; indusium irregularly 

 lacerate, often to the base. 



Type locality: Martinique, St. Kitts (St. Christopher). 



Distribution: St. Kitts, Montserrat, Guadeloupe, Dominica, 

 Martinique, St. Vincent, and Grenada. 



Specimens included: St. Kitts: Forest slopes of Mt. Misery, 

 Britton & Cowell 511. Guadeloupe: (Definite locality not given), 

 altitude 700-900 m., Duss 4353 (N, no. 524250; Y). Dominica: 

 Laudat, Lloyd igo (small form, Y). Martinique: "Bois de la 

 montagne," Pelee, altitude 600-1,000 m., Duss 1555 (N, no. 

 524242, 524243; Y). Grenada: Sherring 137 (small form, Y, N). 



In this as in S. lineata there are large and small forms. In both 

 these species the field notes are too scanty to help explain these 

 differences. Small forms have been seen from Guadeloupe, 

 Dominica, Martinique, and Grenada. The Elliott and the 

 Sherring specimens from Grenada have broadly elliptical-oblong 

 to almost square laminae, with curved lower pinnae. These 



* Markedly coriaceous in but one plant from St. Vincent ("Souffriere," 2,200 ft. 

 in lava, F.ggers 6qii N), which differs also in having crowded overlapping pinnae 

 which are deeply coidate; the wide fertile pinnae are somewhat abnormal, having 

 cordate, sterile bases. (See also footnote under S. violacea, p. 380.) 



